N = 5 K, the Dy magnetic moments order in a commensurate structure with propagation vector 0.5 b∗. Simultaneous with the Dy magnetic ordering, an incommensurate lattice modulation with propagation vector 0.905 b∗ evolves while the original Mn induced modulation is suppressed and shifts from 0.78 b∗ to 0.81 b∗. This points to a strong interference of Mn and Dy induced structural distortions in D...

Abstract manganese lipoxygenase (Mn-LO) oxygenates 18:3n-3 and 18:2n-6 to bis-allylic 11S-hydroperoxy fatty acids, which are converted to 13R-hydroperoxy fatty acids. Other unsaturated C(16)-C(22) fatty acids, except 17:3n-3, are poor substrates, possibly because of ineffective enzyme activation (Mn(II)-->Mn(III)) by the produced hydroperoxides. Our aim was to determine whether unsaturated C(16...

Neurotoxicity due to excessive brain manganese (Mn) accumulation can occur via occupational exposure to aerosols or dusts that contain extremely high levels (>1-5 mg Mn/m(3)) of Mn, or metabolic aberrations (decreased biliary excretion). Given the putative role of astrocytes in regulating the movement of metals across the blood-brain barrier, we sought to examine the relationship between iron (...

Short-term absorption studies with 5-day-old excised barley roots revealed that the basic aspects of Mn absorption were similar to those of other metabolically absorbed cations. Following an initial non-metabolic equilibration with the root, Mn was absorbed for several hours at a slower steady-state rate comparable to that of other inorganic cations. Complete or nearly complete inhibition of th...

In the mouse bone marrow micronucleus assay, it was studied whether micronuclei (MN) could be expelled from polychromatic erythrocytes (PCE) in a similar way to the main nucleus. To avoid the disrupting centrifugation step of the conventional bone marrow preparation procedure, the paintbrush technique was used in the present experiments. With May-Grunwald-Giemsa staining of paintbrush slides, 5...

Using computers, we analyze the integral homology of the matching complex Mn, which is the simplicial complex of matchings in the complete graph on n vertices. Our main result is the detection of p-torsion in the homology for p ∈ {5, 7, 11, 13}. Specifically, we show that there is nonvanishing 5-torsion in the homology of Mn for n ≥ 18 and for n ∈ {14, 16}. The only previously known value was n...

The complex molecule of the title compound, [Mn(3)(C(7)H(5)O(2))(6)(C(10)H(8)N(2))(2)]·H(2)O, contains a linear array of divalent manganese ions. The central Mn(II) atom, which is located on a crystallographic inversion center, is coordinated octa-hedrally by six benzoate O atoms. The two terminal Mn(II) ions are six-coordinated by four benzoate O atoms and two N atoms of 2,2'-bipyridyl. The ce...

This study is aimed at investigating the moisture sorption behavior and thin-layer drying kinetics of local sweet potato sada (LSPS) variety slices. The tubers were sliced 3, 5, 7 mm dried temperatures 45, 55, 62°C a constant air velocity 0.6 m/sec in laboratory-scale cabinet dryer. BET (Brunauer, Emmet, Teller) GAB (Guggenheim-Anderson-De Bore) models applied to fit data. Fick’s diffusion equa...

Manganese deficiency in wheat has become an important nutritional disorder particularly in alkaline calcareous soils where rice-wheat rotation is followed. This experiment was aimed to study the mechanism of Mn efficiency during various developmental stages in six wheat cultivars grown at two Mn levels viz. 0 and 50 mg Mn kg(-1) soil (Mnapplied as MnSO4 x H20) in pots. The Mn vegetative efficie...